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Finding the Fourth Proportional to 93,414.83, 128,911.73 and 53,128.54

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Solution

The fourth proportional to 93,414.83, 128,911.73 and 53,128.54 is: 73,316.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,414.83 : 128,911.73 = 53,128.54 : x
  2. Step 2: Convert to fraction form
    93,414.83/128,911.73 = 53,128.54/x
  3. Step 3: Cross multiply
    93,414.83x = 128,911.73 × 53,128.54
  4. Step 4: Simplify right side
    93,414.83x = 6,848,891,415.85
  5. Step 5: Solve for x
    x = 6,848,891,415.85/93,414.83
  6. Step 6: Final answer
    x = 73,316.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.